HTTP Request Smuggling Bypasses MarkLogic Authentication and Hijacks Sessions
Status: UPDATED
| Advisory ID: CVE-2026-9190
Key Details
| CVE | CVE-2026-9190 |
| CVSS Score / Version | 9.1 (Critical) / CVSS v3.1 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is none. |
| Affected products | Progress marklogic_server |
| Classified as | CWE-444 (Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')) |
| Exploitation prediction (EPSS) | 0.43% probability of exploitation in the next 30 days (36% percentile) -- FIRST.org's EPSS model. |
Affected Products, Subsystems & Sectors
| Subsystems | General OT |
| Sectors | Multiple |
What to Know
An HTTP request smuggling vulnerability in the HTTP App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows a remote attacker to bypass authentication and authorization checks, hijack a legitimate user's session, or capture credentials. The vulnerability occurs when a crafted HTTP request containing both Content-Length and Transfer-Encoding headers causes a reverse proxy and MarkLogic Server to interpret request boundaries differently.
What to Do
Monitor Progress's web page for any future patch releases. See vendor advisory link below.
References